don't call discovery.setTorrent twice
don't call discovery.setTorrent twice

See
https://github.com/sidd/webtorrent/commit/b5600d6c06b51e5af940275dc60a5e
17e26ea61b#commitcomment-15331318

jamesliu96/webtorrent,joshterrill/webtorrent,jamesliu96/webtorrent,arestov/webtorrent,webtorrent/webtorrent,feross/webtorrent,webtorrent/webtorrent,yciabaud/webtorrent,joshterrill/webtorrent,feross/webtorrent,rom1504/webtorrent,yciabaud/webtorrent